Tens transmitting device for calcu



April 4, 1939- T. o. R. DAHLBERG TENS TRANSMITTING DEVICE FORCALCULATING MACHINES AND THE LIKE Filed May '7, 193

Tara! Ola-S- Rkkcxrd Domberg.

Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE TENS TRANSMITTINGDEVICE FOR CALCU- LATING MACHINES AND THE LIKE Application May 7, 1936,Serial No. 78,353 In Sweden May 22, 1935 10 Claims.

The present invention relates to a tens transmitting device for addingmachines and the like, having totalizer wheels, which are disconnectiblerelatively to differential setting members (setting racks) or the like,and the chief object of the invention is to provide for a positivelyoperating tens transmitting device, which may be applied, without anydifficulty, in most varying kinds of calculating machines, cashregisters and the like, without necessitating the changing of theconstruction of the device to be able to correspond to the purposes thevarious machines are intended to serve.

An embodiment of the invention is illustrated in the accompanyingdrawing, in which Figure 1 shows a vertical section on line I-I of Fig.2 through a tens transmitting device, when applied to a cash registerhaving double totalizers.

Figure 2 shows the device in plan view, partly in section and Figure 3shows a section on line III-III of Figure 1.

Referring to the drawing numerals and la indicate the totalizer wheelsof two individual totalizer systems, the wheels indicated by I being thewheels of one totalizer system serving to add the figures entered on thecounting racks to the totals previously obtained in this totalizer system and the wheels indicated by la being the wheels of the other systemadding the same figures to the totals previously obtained in said secondsystem. The totalizer wheels are mounted on the totalizer wheel shaft 2,Which in its turn is mounted in frames or frame plates 3. The saidplates are provided with guide grooves 4, 5, through which shafts B, Iextend. By means of cam or curve discs 8, 9, secured to the shaft 7, andadapted to cooperate with studs Ill, ||.secured to the frames, it ispossible, when turning the cam discs, to put the frames and with themalso the totalizer wheels into a reciprocating motion. In the embodimentshown there are two cam discs 8, 9 for each frame 3. A plate |2 isrigidly connected with each totalizer wheel, the said plate beingprovided with a pin l3 serving as a cam. A swingable arm M, which may beadjusted to two positions (shown in full and in broken lines,respectively, in Fig 1), is connected by means of a pivot l5 to each ofthe frames 3, respectively Each arm I4 is provided with two pins l6, II,which, when the arm is swung, move to and fro in an aperture I8 providedin the frame, the side edges of the said groove forming stops for thepins l6, II. In the groove |8 there is, between its terminal points, I9,20, provided a leaf spring 2|, which is bent in its longitudinaldirection and the middle portion of which is secured between the pinsI6, l1 and the direction of force of which is reversible by the middleportion of the spring, by the swinging of the arm, being caused to belocated at one side or the other of a line connecting the fixing pointsI9, 20. On two surfaces, which are opposite each other, each arm I4 isprovided with cam surfaces 22, 23, one of which, 22, is adapted tocooperate with the cam or pin l3, the other cam surface 23 being adaptedto cooperate with a cam 25, secured on the shaft 6 In the drawingnumeral 26 indicates the setting racks, which, are guided by means ofshafts 29, 30' extending through guide slits 21, 28. The setting racks2B are adjusted and driven, for example in the manner disclosed in thespecification of U S. Patent No. 1,839,138. On each setting raok thereare, in their turns, provided two totalizer actuating racks 33, 330.,which are provided with teeth 39 and displaceable by means of guideslits 34 and guide pins 3|, 32 Each of the said actuating racks isprovided with a slit 35, in which there is placed a leaf spring 36 in acorresponding manner as in the slit |8 of the arm l4, the middle portionof the said spring being fixed between two pins 31, 38 secured on thesetting rack 26 By means of the leaf spring 36 the actuating rack 33 maybe locked in the position, which the said rack occupies after a tenstransmitting operation has taken place. In order that it shall bepossible to return the rack 33 to its initial position after suchtransmitting operation has been performed, the lower portion of the rackis provided with a pin 40, which serves as a stop and which is adaptedto cooperate with the members described more particularly in thefollowing.

4| indicates guide members located between the setting racks 26, each ofwhich members, by turning cam or curve discs 42, 43, which are securedon a shaft 41 and which are adapted to cooperate with rolls 44 securedto the member 45 4|, is adapted to be put into an up and down motion,during which motion the member is guided by guide grooves 45, 46, intowhich the shafts 3|] and 41 extend. On each member 4| there is fixed anS-shaped plate 56, which thus 50 takes part in the motion of the member4| o each of the members 4| and the plates 56 there is, by means ofguide grooves 49 and guide pins 50, displaceably disposed a tenstransmitter 5| and 5|a respectively As will be seen from the 5 drawingthe said tens transmitter is shaped from a plate 48 and according to thepresent embodiment, where the machine is provided with doubletotalizers, it forms an arm, which is directed obliquely outwards andwhich extends past the nearest actuating rack and to the followingactuating rack, with which the arm is meant to cooperate. From the part48 there is also formed a cam or guide surface 52, adapted to cooperatewith a stationary shaft 53, and further, the part 48 is provided with apin 54, with which the arm I4 is adapted to cooperate The member 4| andthe plate 56 are provided with an angularly bent portion 55 and 51respectively, forming stops, adapted to cooperate with the pins 40secured on the actuating racks. Finally, there are toothed wheels 58rotatably mounted on the shaft 6, which are meant to serve as motiontransmitting members between the totalizer wheels I and other members,which are not shown in the drawing, to which numeral values are to besupplied, as for example, storage sets. BI, 62 indicate tube sleeves,which serve to keep the totalizer wheels I, la and the frames 3 incorrect positions relatively to each other on the shaft 2.

The device functions as follows:

It is assumed that the frames 3 together with the totalizer wheels Ieither occupy their right terminal position, in which the totalizerwheels are in engagement with the wheels 58, or an intermediate position(not shown in the drawing), in which the totalizer wheels are out ofengagement with the actuating racks and the wheels 58. In theintermediate position the totalizer wheels are blocked against freerotation by spring actuated ratchets 65. Relatively to the setting racks26 the actuating racks occupy the position shown in the drawing. Thesetting racks are moved downwards a number of pitches corresponding to anumeral value entered on keys or the like. When turning the cam discs 8,9 the totalizer wheels carried by the frames 3 are moved to their leftterminal position, the said wheels meshing with the respective actuatingracks The setting racks are now moved back to the initial position,during which movement, a rotating movement, in the direction of thearrow shown in Figure 1, is imparted to the wheels I, said rotatingmovement corresponding to the movement of the setting racks. If in sucha case, the totalizer wheel shown in the last mentioned figure hasaccumulated the figure nine a tens transmitting operation thus is totake place The initial position for the arm I4 is the position shown infull lines in Figure I. During the continued rotation of the totalizerwheel I the cam l3 actuates the cam surface 22 of the arm l4 and,against the action of the leaf spring 2|, swings the arm I4 so far thatthe central portion of the spring is forced across a line connecting theterminal points I9, 29. Having reached this position, the spring jumpsinto the position indicated in dot-dash lines in Fig. 1. The arm l4through the intermediary of the pins l6, I7 is taken along and swunginto the position indicated bydash-and-dot lines. In this new positionthe arm is retained by the spring 2|. While the totalizei wheel is stillin engagement with the actuating rack 33 the guide member 4| movesupwards, by which the pin 54 will cooperate with the guide surface 59 ofthe arm l4. Owing to the fact, that each arm l4 in its dot-dash positionoffers a stationary cam face 59 to the pin 54 on the correspondingmember 5|, 5|a, each of the latter members which upon rising finds thecorresponding arm l4 in its left-hand position is displaced towards thesetting rack so as to occupy the position indicated by dash-and-dotlines in Figure 2. Each of the members 5|, 5|a, by being bent at anangle, projects past the adjacent actuating rack 33a, 33, to theactuating rack 33, 33a representing the next higher denomination of thesame totalizer system. Thus, the free end of each member 5|, 5m, whichhas been displaced in the first stage of its upward movement bycooperation with an arm l4, upon continued upward movement of the guidemember 4| encounters a stop 60 formed on said actuating rack 33, 33a ofthe next higher denomination and takes the latter along upwardly. Themovement of the member 4| is so adapted as to impart through member 5|,5|a. and actuating rack 33, 33a to the totalizer wheel in engagementwith the said actuating rack a rotating motion corresponding to onepitch. When the said tens transmitting operation has been done theactuating rack is retained by the leaf spring 35 in the position it hasassumed during the transmitting operation. The totalizer wheel I may nowbe again brought out of engagement with the actuating raci: 33. Beforethe said movement takes place the guide member has again moved so fardownwards that the arm M will not be actuated by the pin 54; this inorder that the arms 4, which have not been adjusted by the respectivetotalizer wheels, during the movement to the right of the lastmentionedwheels, shall not strike against the pins 54. Also after the totalizerwheels have gone out of engagement with the actuating racks 33 the guidemember 4| continues its downward movement. During this operation thestops 55, 5'! strike against the pins or stops 4!! of the actuatingracks and return the actuating racks to the initial positions, the saidracks having just been adjusted at the tens transmitting operation.Further, the tens transmitting members, which have previously beenactive, are caused to reoccupy their initial positions, by the camsurface 52 being caused to cooperate with the shaft 53.

To return the adjusted arms l4 to initial position the earns 25, byturning of the shaft 6, are caused to actuate the cam surfaces 23 of thearms Having now described my invention, what I claim as new and desireto secure by Letters Patent is:

1. In a calculating machine, the combination with setting members, atotalizing shaft, totalizing wheels rotatable on said shaft, and meansfor reciprocating said shaft and totalizer wheels substantially at rightangles to the longitudinal axis of said shaft into operative andnon-operative positions with respect to said setting members, of areciprocating tens transporter for one denomination, a cam on thetotalizer wheel of the next lower denomination to correspond with thehighest denominational number on the wheel, and a guide memberadjustable into operative position by said cam to guide said tenstransporter of the next higher denominational order during its movementin one direction into a position for cooperative engagement with thecorresponding setting member, said guide member being arranged to beadjustable by said totalizer wheel into operative and inoperativeposition of the latter with respect to the setting members.

2. A calculating machine, as claimed in claim 1, in which each of saidsetting members comprises a reciprocable setting rack and an actuatingrack arranged on said setting rack to be engaged and longitudinallydisplaced with respect to the setting rack by the corresponding tenstransporter during the movement of the latter in one direction, saidtens transporter in its nonoperative position being disposed outside ofthe path of the reciprocating setting member.

3. A tens transmitting device, as claimed in claim 1, in which each ofsaid setting members comprises a reciprocable setting rack and anactuating rack arranged on said setting rack to be engaged andlongitudinally displaced with respect to the setting rack by thecorresponding tens transporter during the movement of the latter in onedirection, said device comprising further a detent mechanism for each ofsaid actuating racks to lock the same in either position with respect tothe corresponding setting rack, a stop on each actuating rack and a stopconnected with each tens transporter, respectively, said stops beingarranged for cooperation upon completion of the tens transporters returnmovement to restore the displaced actuating racks to their originalposition with respect to the setting racks.

4. In a calculating machine the combination with setting members, atotalizing shaft and totalizing wheels rotatable on said shaft of aframe carrying said totalizer shaft, means to reciprocate said frame atright angles to the longitudinal axis of said shaft to move saidtotalizer wheels alternately into: operative and non-operative positionswith respect to said setting members, a cam on one of the totalizerwheels, an arm pivoted to said frame and adjustable into operativeposition by said cam, a reciprocating tens transporter for the settingmember of the next higher denomination, said transporter being adaptedto cooperate during its movement in one direction with the arm of thenext lower denominational order, and a detent mechanism to lock said armin operative and non-operative position, said detent mechanism includinga leaf spring bent in its longitudinal direction and fixed with its endsin said frame and means on said arm to hold the mid-portion of saidspring in its position with respect to said arm.

5. A tens transmitting device, as claimed in claim 1, in which each ofsaid setting members comprises a reciprocable setting rack, an actuatingrack arranged on. said setting rack to be engaged and longitudinallydisplaced with respect to the setting rack by the corresponding tenstransporter, during the movement of the latter in one direction, and adetent mechanism to lock the actuating rack in either position withrespect to the setting rack, said mechanism including a leaf spring bentin its longitudinal direction and fixed with its ends to the actuatingrack and means on the setting rack to hold the middle portion of saidspring in its position with respect to said setting rack.

6. A calculating machine, as claimed in claim 1, in which said means forreciprocating said shaft and totalizer wheels include a framereciprocating towards and away from said setting members and carryingsaid totalizer shaft and guide member.

'7. A calculating machine, as claimed in claim 1, in which said guidemember comprises a swingable arm and a detent mechanism to lock said armin operative and in non-operative position, respectively.

8. A calculating machine, as claimed in claim 1, comprising areciprocating carrier for said tens transporter, the latter beingdisplaceable on said carrier at approximately right angles to thedirection of the carrier reciprocation, said guide member beingadjustable by said cam to a posi tion to cause displacement of said tenstransporter with respect to said carrier during movement of the latterin one direction.

9. A calculating machine, as claimed in claim 1, comprising furtherguide means to restore said tens transporter to its non-operativeposition after cooperation with the setting members.

10. A calculating machine, as claimed in claim 1, which includes furthera continually rotating cam, and in which said guide member comprisesTORD OLOF RICKARD DAHLBERG.

